|
I believe the full spectrum mod is more important in opening up the camera potential - you can make do without cooling just build a dark library. The spectrum mod gives you access to something like five times as much Ha than available through the stock filters.
If you do want cooing,
Re dry ice, that creates problems itself, you don't need to be that radical. What is imperative is dry cooling and if you can get to say +2C that is good enough for good signal noise control. Dry ice will flash freeze moisture onto surfaces. Dry gas like nitrogen or argon (which I use), will not transport moisture but carbon dioxide will. A good cooler box full of dry gas might be enough to get you sensor into a range where noise is reduced. Don't look at EXIF file temperature data as that is actually DIGIC processor temperatures which is not near the sensor.
Last edited by glend; 18-12-2015 at 12:43 PM.
|